弹出和推送导航在SwiftUI中不起作用吗？

struct ContentView: View {
    @State private var isPresented = false
    
    var body: some View {
        Button("弹出导航") {
            isPresented = true
        }
        .sheet(isPresented: $isPresented) {
            Text("这是一个弹出的视图")
        }
    }
}

struct ContentView: View {
    var body: some View {
        NavigationView {
            VStack {
                NavigationLink(destination: Text("这是一个推送的视图")) {
                    Text("推送导航")
                }
            }
        }
    }
}